/Engine/Source/Editor/Sequencer/Public/SequencerUtilities.h
Creates a button (used for +Section) that fires a user-defined OnClick response with no sub-menu.
static [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > MakeAddButton ( [FText](API\Runtime\Core\Internationalization\FText) HoverText, FOnClicked OnClicked, const [TAttribute](API\Runtime\Core\Misc\TAttribute)< bool > & HoverState, [TWeakPtr](API\Runtime\Core\Templates\TWeakPtr)< [ISequencer](API\Editor\Sequencer\ISequencer) > InSequencer )